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2821 MGCP not registering with CCM 4.1

Hello, I am trying to get an E1 Q.sig up but the gateway just won't register with the Call Manager, here is the relevant config being used:

controller E1 0/0/0

pri-group timeslots 1-31 service mgcp

interface Serial0/0/0:15

no ip address

no logging event link-status

isdn switch-type primary-qsig

isdn incoming-voice voice

isdn bind-l3 ccm-manager

isdn bchan-number-order ascending

no cdp enable


mgcp call-agent 2427 service-type mgcp version 0.1

mgcp dtmf-relay voip codec all mode out-of-band

mgcp rtp unreachable timeout 1000 action notify

mgcp package-capability rtp-package

no mgcp package-capability res-package

mgcp package-capability sst-package

no mgcp package-capability fxr-package

no mgcp timer receive-rtcp

mgcp sdp simple

mgcp fax t38 inhibit

mgcp rtp payload-type g726r16 static


mgcp profile default

When issuing the show ccm-manager command I get this:

MGCP Domain Name:

Priority Status Host


Primary Registering with CM

First Backup None

Second Backup None

Current active Call Manager: None

Backhaul/Redundant link port: 2428

Failover Interval: 30 seconds

Keepalive Interval: 15 seconds

Last keepalive sent: 00:57:01 UTC May 13 2006 (elapsed time: 06:33:04)

Last MGCP traffic time: 07:29:44 UTC May 13 2006 (elapsed time: 00:00:21)

Last failover time: None

Last switchback time: None

Switchback mode: Graceful

MGCP Fallback mode: Not Selected

Last MGCP Fallback start time: None

Last MGCP Fallback end time: None

MGCP Download Tones: Disabled

Backhaul Link info:

Link Protocol: TCP

Remote Port Number: 2428

Remote IP Address:

Current Link State: OPEN


Packets recvd: 0

Recv failures: 0

Packets xmitted: 0

Xmit failures: 0

PRI Ports being backhauled:

Slot 0, port 0

Configuration Auto-Download Information


No configurations downloaded

Current state: Downloading XML file

Configuration Download statistics:

Download Attempted : 1

Download Successful : 0

Download Failed : 0

Configuration Attempted : 0

Configuration Successful : 0

Configuration Failed(Parsing): 0

Configuration Failed(config) : 0

Last config download command:

Configuration Error History:

FAX mode: cisco

and when debuging for mgcp packet I can see them comming and going:

*May 13 07:31:14.290: MGCP Packet sent to>

RSIP 78495923 * MGCP 0.1

RM: restart


*May 13 07:31:14.294: MGCP Packet received from>

500 78495923

I am kind of desesperate since everything seems to be fine, could anyone please give me a comment?


Re: 2821 MGCP not registering with CCM 4.1

I would check if you have a domain name configured on the router, then your MGCP gateway entry in callmanager should look like

Re: 2821 MGCP not registering with CCM 4.1

In the show ccm command, the first line has the domain name MGCP is using.

MGCP Domain Name:

Now, I have ran into an issue where IOS was sticking as the domain-name when we didn't configure it at all once. When we removed the domain name a few minutes later the domain command re-appeared all by itself with as the domain. On that one, we went ahead and used the clients domain name and the problem went away.

Re: 2821 MGCP not registering with CCM 4.1


add this line;

ccm-manager mgcp

and optional if you want CCM to configure the gateway via tftp config;

ccm-manager config

ccm-manager config server

(and ofcourse, if you don't have in your CCM MGCP config, remove it from your GW config)

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